【摘要】 基于LandsatTM/ETM+遥感影像提取的土地利用数据,结合森林生物量已有研究成果分析了珠三角地区森林固碳释氧效应变化特征。研究结果表明,1986～2000年期间珠江三角洲森林面积从2345902hm2急剧缩减到1925286hm2,区域森林生态系统碳储量下降了2739762t,生态系统对碳氧的调节能力下降了15.84%,固定CO2和释放O2的量分别减少5980023t.a-1和4349122t.a-1,快速城市化区域森林生态系统变化对生态环境的影响不可忽视。更多还原

【Abstract】 Based on land use data abstracting by Classes from Landsat TM / ETM + remote sensing images and research results of forest biomass,changes of forest carbon sequestration and oxygen production were analyzed in the Pearl River Delta from 1986 to 2000. Research results showed that the total area of forest decreased from 2345902 hm2 in 1986 to 1925286 hm2 in 2000.Regional forest ecosystem carbon stocks decreased by 2739762t.The ability for a balance of carbon and oxygen for the forest ecosystem decreased by 15.84%.The amount of CO2 sequestration and O2 production decreased by 5980023 t·a-1 and 4349122 t·a-1 respectively. The study indicated that the impacts of forest ecosystem changes on the eco-environment could not be neglected or ignored in the rapidly urbanizing area in China.更多还原